Self-sorting of multicomponent Pt(II) metallacages

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• 作者：Mingming Zhang ; Manik Lal Saha ; Peter J. Stang
• 关键词：Self ; sorting ; Heteroleptic assemblies ; Metallacages ; Charge ; separation
• 刊名：Structural Chemistry
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：28
• 期：2
• 页码：453-459
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Computer Applications in Chemistry; Physical Chemistry; Theoretical and Computational Chemistry;
• 出版者：Springer US
• ISSN：1572-9001
• 卷排序：28

文摘

Using a social self-sorting phenomenon, two Pt(II)←pyridyl, carboxylate heteroleptic metallacages cage 1 and cage 2 have been constructed in nearly quantitative yields from a single reaction that contained twenty-eight communicative precursors, including five unique species 3–7 in a 2:4:16:2:4 molar ratio. The success of this reaction has been established by multinuclear NMR (31P and 1H), UV/Vis absorption and fluorescence emission spectroscopies. The process depends on various factors such as the energetic preference for Pt←N,O coordination over the Pt←N,N and Pt←O,O coordination motifs, the appropriate selection of stoichiometry and directionality of the precursors, as well as maximum site occupancy while keeping entropic costs as low as possible.